CN106224931A - The determination methods of sintering machine large flue built-in waste heat boiler water leakage - Google Patents
The determination methods of sintering machine large flue built-in waste heat boiler water leakage Download PDFInfo
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- CN106224931A CN106224931A CN201610648667.1A CN201610648667A CN106224931A CN 106224931 A CN106224931 A CN 106224931A CN 201610648667 A CN201610648667 A CN 201610648667A CN 106224931 A CN106224931 A CN 106224931A
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- sintering machine
- large flue
- machine large
- lower wall
- temperature value
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
- F22B37/421—Arrangements for detecting leaks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
- F27D2017/006—Systems for reclaiming waste heat using a boiler
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Thermal Sciences (AREA)
- General Physics & Mathematics (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to the determination methods of a kind of sintering machine large flue built-in waste heat boiler water leakage, the method mainly often organizes after heat exchanger on sintering machine large flue temperature value data message in lower wall by collecting unit Real-time Collection；In the upper lower wall that will collect, temperature value data information transfer is to data processing unit, temperature value in temperature value in sintering machine large flue upper wall per second and sintering machine large flue lower wall per second is added up with set time unit respectively for interval, difference is asked to obtain on sintering machine large flue temperature value difference in lower wall, and calculate on sintering machine large flue temperature value deviation increasing value in lower wall, observer is by the variation tendency of temperature value deviation value in lower wall on display unit Real Time Observation sintering machine large flue, and then can accurately judge whether waste heat boiler water leaks, effectively reduce contingency occurrence probability.Heat exchanger leakage can be made to judge time advance more than at least 2 hours, and making heat exchanger occur during leakage can handle it in time, thus ensures the stability of production.
Description
Technical field
The invention belongs to sintering machine built-in large flue waste heat boiler technical field, particularly relate to a kind of sintering machine large flue
The determination methods of built-in waste heat boiler water leakage.
Background technology
Sintering machine large flue heat recovery technology is divided into external waste heat boiler and built-in waste heat boiler two kinds, wherein with
Built-in organic efficiency is the highest.But it is the most built-in remaining that the construction principal element affecting built-in waste heat boiler is steel mill's worry
Heat boiler produces leakage, and operations staff cannot find leakage situation in time, it is impossible to processes timely and effectively, causes tail flue gas to contain
Water, affects the safe operation of postorder production technology and equipment.Current equipment is all not equipped with heat exchange unit leak detecting device.And
When leakage rate is less, feedwater makes feedwater flow vary less with steam flow deviation value, and often because of the error of flow measurement
And cannot judge.Therefore invent a kind of new measuring method, judge that heat exchange unit leaks and processes in time in advance, for
Prevent heat exchange unit leakage from expanding or reducing causality loss and have the biggest realistic meaning.
Summary of the invention
It is an object of the invention to provide one and remotely detect more than sintering machine large flue simply, efficiently, accurately and rapidly
The method of heat boiler water leakage, thus judge that heat exchange unit leaks and processes in time in advance, for preventing heat exchange unit
Leakage expands or reduces causality loss.
For solving the technical problem that prior art exists, the technical solution used in the present invention is:
The present invention a kind of sintering machine large flue built-in waste heat boiler water leakage determination methods, it is characterised in that include with
Lower step:
A. temperature value and sintering machine large flue in sintering machine large flue upper wall are often organized after heat exchanger by collecting unit Real-time Collection
Temperature value data message in lower wall；
B. in the sintering machine large flue upper wall that will collect, in temperature value and sintering machine large flue lower wall, temperature value data message passes
Be delivered to data processing unit, data processing unit process in obtaining sintering machine large flue upper wall the most per second, temperature value is with every
Temperature value in second sintering machine large flue lower wall；
C. by temperature value in temperature value in sintering machine large flue upper wall per second and sintering machine large flue lower wall per second with the set time
Unit adds up respectively for interval, in temperature value in the sintering machine large flue upper wall after adding up and sintering machine large flue lower wall
Temperature value asks difference to obtain on sintering machine large flue temperature value difference in lower wall, and by temperature in lower wall on this sintering machine large flue
Value difference value stores in the memory unit；
D. on the sintering machine large flue that on sintering machine large flue, in lower wall, temperature value difference obtains with previous time series in real time
In lower wall, temperature value deviation value seeks difference, obtains on sintering machine large flue temperature value deviation increasing value in lower wall, and sintering machine is big
On flue, in lower wall, temperature value deviation increasing value feeds back to observer by display unit；
E. the variation tendency of temperature value deviation value in lower wall on observer's Real Time Observation sintering machine large flue, if difference jumps and
Continue to increase, then judge that the previous heat exchanger of measuring point leaks, if difference is without significant change, then judge the previous heat exchange of measuring point
Device leaks；
F. data processing unit calculates on sintering machine large flue the rate of increase of temperature deviation value in lower wall in real time, when deviation value increases
Long rate persistently raises in 5min, sends and reports to the police for the first time, when rate of increase is at 20min when continuous increasing value per minute is more than 2 DEG C
Interior continuation raises, and occurs second time to report to the police when continuous increasing value per minute is more than 2 DEG C, and prompting operations staff should emergent management immediately
Leakage accident, until operations staff resets calculating.
Further, data processing unit is also with error correction arbitration functions, when being less than occurs in sintering machine large flue upper wall wall temperature
During the situation of sintering machine large flue lower wall wall temperature, during if it is determined that difference is less than 5 DEG C, then it is considered as measurement error, if it is determined that poor
When value is more than 5 DEG C, prompting checks temperature sensor the most on a display screen, and automatically gives up this partial error data, not calculates.
Further, described set time unit is 0.5min.
Further, described collecting unit for after often group heat exchanger in sintering machine large flue upper wall temperature sensor and often group change
Temperature sensor in sintering machine large flue lower wall after hot device.
Further, described data processing unit is microprocessor.
Further, described memory element is computer disk or solid state hard disc memorizer.
Further, described display unit is liquid crystal display.
The invention has the beneficial effects as follows:
1) principle of the invention is simple, efficient, accurate, once shows that the wall temperature temperature difference increases, can clearly judge it must is to have soda pop
Leakage phenomenon occurs, and is that instead of confluent and measures, with steam flow difference, the effective ways judged.
2) present invention detects quickly, the very first time can record leakage, effectively reduce contingency occurrence probability.Heat exchange list can be made
Unit's leakage judges time advance more than at least 2 hours, makes heat exchange unit occur during leakage and can handle it in time, thus ensures life
The stability produced, it is to avoid the generation of contingency.
Accompanying drawing explanation
Accompanying drawing explanation
Fig. 1 is point for measuring temperature scheme of installation of the present invention.
In figure, 1 sintering machine, 2 waste heat boilers, wall temperature probe temperature sensor on 3 sintering machine large flues, 4 memory element,
5, display unit, 6 data processing units, 7 sintering machine large flues, 8 heat exchangers, under 9 sintering machine large flues, wall temperature probe temperature passes
Sensor, 11 feedwater, 12 steam.
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the determination methods of a kind of sintering machine large flue built-in waste heat boiler water leakage of the present invention, it is special
Levy and be, comprise the following steps:
A. temperature value and sintering machine opium in sintering machine large flue upper wall are often organized after heat exchanger 8 by collecting unit Real-time Collection
Temperature value data message in road lower wall；Described collecting unit is often temperature sensor in sintering machine large flue upper wall after group heat exchanger
3 and often temperature sensor 9 in sintering machine large flue lower wall after group heat exchanger.Here flow can be carried out by existing DCS system
Gather, it is also possible to gather flow by other special equipment.
B. temperature value data letter in temperature value and sintering machine large flue lower wall in the sintering machine large flue upper wall that will collect
Breath is delivered to data processing unit 6, data processing unit 6 process and obtain temperature in sintering machine large flue upper wall the most per second
Temperature value in value and sintering machine large flue lower wall per second；
C. by temperature value in temperature value in sintering machine large flue upper wall per second and sintering machine large flue lower wall per second with the set time
Unit adds up respectively for interval, and described set time unit is 0.5min, is possible not only to ensure the ageing, simultaneously of detection
The incidental error impact on measurement result can be reduced.
Difference is asked to obtain temperature value in temperature value in the sintering machine large flue upper wall after adding up and sintering machine large flue lower wall
Temperature value difference in lower wall on sintering machine large flue, and temperature value Difference Storage in lower wall on this sintering machine large flue is being deposited
In storage unit 4；Described memory element 4 is computer disk or solid state hard disc memorizer.
D. temperature in the upper lower wall that on sintering machine large flue, in lower wall, temperature value difference obtains with previous time series in real time
Angle value deviation value seeks difference, obtains on sintering machine large flue temperature value deviation increasing value in lower wall, by inclined for temperature value in upper lower wall
Difference increasing value feeds back to observer by display unit 5, and described display unit 5 is liquid crystal display；
E. the variation tendency of temperature value deviation value in lower wall on observer's Real Time Observation sintering machine large flue, if difference jumps and
Continue to increase, then judge that the previous heat exchanger of measuring point 8 leaks, if difference is without significant change, then judges that measuring point is previous and change
Hot device 8 leaks；
F. data processing unit 6 calculates on sintering machine large flue the rate of increase of temperature deviation value in lower wall in real time, when deviation value increases
Long rate persistently raises in 5min, sends and reports to the police for the first time, when rate of increase is at 20min when continuous increasing value per minute is more than 2 DEG C
Interior continue raise, continuous increasing value per minute more than 2 DEG C, time occur second time report to the police, prompting operations staff should the most promptly locate
Reason leakage accident, until operations staff resets calculating, described data processing unit 6 is microprocessor.
Further, the data processing unit 6 of the present invention is also with error correction arbitration functions.Due to the fluctuation of flue-gas temperature, it is
The factors such as system leaks out, are likely to result in and occur that the feelings less than sintering machine large flue lower wall wall temperature occurs in sintering machine large flue upper wall wall temperature
Condition.If it occur that water leakage accident, upper wall temperature can not be less than lower wall temperature, so needing computer automatic debug numerical value.
Determination methods is: during if it is determined that difference is less than 5 DEG C, be then considered as measurement error, during if it is determined that difference is more than 5 DEG C, then aobvious
In display screen, prompting checks temperature sensor, and automatically gives up this partial error data, not calculates.
The most built-in 2～3 heat exchangers on sintering large flue.Any one heat exchanger temperature difference of wall temperature up and down below raises
The previous heat exchanger leakage of general proxy, because being generally disposed with Lou ash bucket 10 below heat exchanger, leaking of heat exchanger 8 is logical
Chang Buhui crosses next stage heat exchanger；Heat exchanger has leaked and has leaked forward and spray regime.
The present invention utilize aqueous water temperature far below flue-gas temperature, water density much larger than the feature of density of flue gas, survey
Measure the wall temperature up and down of sintering machine large flue 7 after every heat exchanger 8, and calculating temperature difference, it is judged that whether waste heat boiler exists water leakage.
The measurement temperature of sintering machine large flue upper wall can represent the temperature of flue gas, and is not affected by water leakage, and sintering machine is big
The wall temperature of flue lower wall is directly affected by flue gas and water, if certain heat exchanger exists water leakage, then the sintering in downstream
Machine large flue lower wall wall temperature can reduce rapidly, thus increases the sintering machine large flue upper and lower wall temperature temperature difference in downstream.At waste heat boiler
Time properly functioning, demarcate an initial temperature differences, if the temperature difference of wall temperature up and down of sintering machine large flue can be cherished more than 10 DEG C suddenly
It is suspected to have leakage phenomenon, if it exceeds 40 DEG C then determine existence leakage, needs operations staff's emergent management.
The present invention can also install one group of wall temperature measurement point for measuring heat-exchanger rig again at sintering machine large flue head
Micro-leakage.When micro-leakage, water can evaporate because of the high temperature of flue gas, in sintering large flue head zone, in large flue
Flue-gas temperature would generally reduce, and sometimes condenses into drop because of the higher reason of flue gas dew point, and now temperature measured by temperature element
Temperature approach is shown over the display by after the recovery, reminds operations staff to note.Temperature element herein is with anticorrosion sleeve pipe.
Claims (7)
1. the determination methods of a sintering machine large flue built-in waste heat boiler water leakage, it is characterised in that comprise the following steps:
A. temperature value and sintering machine large flue in sintering machine large flue upper wall are often organized after heat exchanger by collecting unit Real-time Collection
Temperature value data message in lower wall；
B. in the sintering machine large flue upper wall that will collect, in temperature value and sintering machine large flue lower wall, temperature value data message passes
Be delivered to data processing unit, data processing unit process in obtaining sintering machine large flue upper wall the most per second, temperature value is with every
Temperature value in second sintering machine large flue lower wall；
C. by temperature value in temperature value in sintering machine large flue upper wall per second and sintering machine large flue lower wall per second with the set time
Unit adds up respectively for interval, in temperature value in the sintering machine large flue upper wall after adding up and sintering machine large flue lower wall
Temperature value asks difference to obtain on sintering machine large flue temperature value difference in lower wall, and by temperature in lower wall on this sintering machine large flue
Value difference value stores in the memory unit；
D. on the sintering machine large flue that on sintering machine large flue, in lower wall, temperature value difference obtains with previous time series in real time
In lower wall, temperature value deviation value seeks difference, obtains on sintering machine large flue temperature value deviation increasing value in lower wall, and sintering machine is big
On flue, in lower wall, temperature value deviation increasing value feeds back to observer by display unit；
E. the variation tendency of temperature value deviation value in lower wall on observer's Real Time Observation sintering machine large flue, if difference jumps and
Continue to increase, then judge that the previous heat exchanger of measuring point leaks, if difference is without significant change, then judge the previous heat exchange of measuring point
Device leaks；
F. data processing unit calculates on sintering machine large flue the rate of increase of temperature deviation value in lower wall in real time, when deviation value increases
Long rate persistently raises in 5min, sends and reports to the police for the first time, when rate of increase is at 20min when continuous increasing value per minute is more than 2 DEG C
Interior continuation raises, and occurs second time to report to the police when continuous increasing value per minute is more than 2 DEG C, and prompting operations staff should emergent management immediately
Leakage accident, until operations staff resets calculating.
The determination methods of sintering machine large flue the most according to claim 1 built-in waste heat boiler water leakage, its feature exists
In data processing unit also with error correction arbitration functions, under sintering machine large flue upper wall wall temperature occurs less than sintering machine large flue
During the situation of wall wall temperature, during if it is determined that difference is less than 5 DEG C, then it is considered as measurement error, during if it is determined that difference is more than 5 DEG C, then
Prompting checks temperature sensor on a display screen, and automatically gives up this partial error data, not calculates.
The determination methods of sintering machine large flue the most according to claim 1 built-in waste heat boiler water leakage, its feature exists
In, described set time unit is 0.5min.
The determination methods of sintering machine large flue the most according to claim 1 built-in waste heat boiler water leakage, its feature exists
It is often temperature sensor and every burning after group heat exchanger in group heat exchanger rear pass sintering machine large flue upper wall in, described collecting unit
Temperature sensor in knot machine large flue lower wall.
The determination methods of sintering machine large flue the most according to claim 1 built-in waste heat boiler water leakage, its feature exists
In, described data processing unit is microprocessor.
The determination methods of sintering machine large flue the most according to claim 1 built-in waste heat boiler water leakage, its feature exists
In, described memory element is computer disk or solid state hard disc memorizer.
The determination methods of sintering machine large flue the most according to claim 1 built-in waste heat boiler water leakage, its feature exists
In, described display unit is liquid crystal display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610648667.1A CN106224931B (en) | 2016-08-10 | 2016-08-10 | The determination methods of the built-in waste heat boiler water leakage of sintering machine large flue |
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| CN201610648667.1A CN106224931B (en) | 2016-08-10 | 2016-08-10 | The determination methods of the built-in waste heat boiler water leakage of sintering machine large flue |
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| CN106224931A true CN106224931A (en) | 2016-12-14 |
| CN106224931B CN106224931B (en) | 2018-02-23 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106918033A (en) * | 2017-03-21 | 2017-07-04 | 山东中实易通集团有限公司 | Three impulses leakage of boiler tubes alarm control system and method |
| CN108844688A (en) * | 2018-06-25 | 2018-11-20 | 华能国际电力股份有限公司 | System and method for monitoring leakage of low-temperature heat exchanger |
| WO2024055464A1 (en) * | 2022-09-13 | 2024-03-21 | 西安热工研究院有限公司 | Leakage monitoring system and method for gas-water heat exchanger |
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| CN101839795A (en) * | 2010-05-10 | 2010-09-22 | 任振伟 | The leak diagnostic systems of pressure-bearing pipe of boiler and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106918033A (en) * | 2017-03-21 | 2017-07-04 | 山东中实易通集团有限公司 | Three impulses leakage of boiler tubes alarm control system and method |
| CN108844688A (en) * | 2018-06-25 | 2018-11-20 | 华能国际电力股份有限公司 | System and method for monitoring leakage of low-temperature heat exchanger |
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| CN106224931B (en) | 2018-02-23 |
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